FLOATATION COLUMN Russian patent published in 1998 - IPC

FIELD: benefication of mineral ores. SUBSTANCE: floatation column has body with pipe unions for delivery of primary material and for outflow of chamber product. Installed inside body is aeration and floatation chamber with jet aerators in the form of at least one pipe with nozzle. Also provided are air pipe union located below nozzle, confuser, foam trough, grate, and units for separation of microbubbles with water outlet pipe unions. Grate is located in aeration and floatation chamber above lower end of pipe with nozzle. Units for separation of microbubbles are made in the form of V-shape components which are located with their tops upward and located between body and aforesaid chamber. Inner surface of confuser is fluted. Located in foam trough is spraying injector, and located between confuser and foam trough is hydrophobic head-piece. Live bore of grate is 15-30% of its total area. Angle of incline of confuser walls to horizontal is 20-70 deg. Number of aerators is 4-8 per 1 sq.m of column working section. Foam trough is connected to vacuum-pump. Primary material delivery pipe unions are connected to compressor. EFFECT: high efficiency. 7 cl, 2 dwg